The world's wealthiest casino owner is a man with a relatively low-key style, but who has made billions through highly charged ambitions.
Sheldon Adelson is the current owner of the Venetian Hotel And Casino in Las Vegas.
Well known for philanthropy work worldwide, he also manages to spend some of his earnings on things he enjoys.
Currently worth about 21.5 billion, Adelson is still the head CEO of the Las Vegas Sands Corporation at age 76.
A favorite hotel in Las Vegas, other versions of the Venetian are now in places like Singapore and Macau.
Sheldon first made his fortune by running successful computer shows.
The second wealthiest casino owner is a 95 year-old Las Vegas entrepreneur named Kirk Kerkorian.
Worth about $11 billion, he came from humble beginnings.
After working various jobs, he became the owner of a small airline that was famous for shuttling high rolling gamblers around the country.
He bought the land on the Las Vegas strip where Caesar's Palace now stands.
With money made through that, he bought interests in the movie studio MGM and from there went into the casino business in Las Vegas as head of MGM Grand Hotel and Casino.
Even though he has sold some of his share of MGM several times, he still owns 39 percent.